Search results for: Muhammad Asif

Items from 1 to 20 out of 541 results

article

Differential evolution based computation intelligence solver for elliptic partial differential equations

Muhammad Faisal Fateh, Aneela Zameer, Sikander M. Mirza, Nasir M. Mirza, more

Frontiers of Information Technology & Electronic Engineering > 2019 > 20 > 10 > 1445-1456

A differential evolution based methodology is introduced for the solution of elliptic partial differential equations (PDEs) with Dirichlet and/or Neumann boundary conditions. The solutions evolve over bounded domains throughout the interior nodes by minimization of nodal deviations among the population. The elliptic PDEs are replaced by the corresponding system of finite difference approximation,...

article

Supplemental potassium mediates antioxidant metabolism, physiological processes, and osmoregulation to confer salt stress tolerance in cabbage (Brassica oleracea L.)

Waqas Ahmad, Chaudhary Muhammad Ayyub, Muhammad Asif Shehzad, Khurram Ziaf, more

Horticulture, Environment, and Biotechnology > 2019 > 60 > 6 > 853-869

Soil salinity is one of the severe threats of climate change that inflicts heavy losses to vegetable production. Potassium (K) has been considered essential approach against abiotic stresses in food crops, however, understanding of K regulated mechanisms for inducing tolerance to NaCl stress in cabbage (Brassica oleracea L.) plants is, still elusive. Here, we report the supplemental K effects on antioxidant...

article

Secreted frizzled‐related protein 4 and its implication in obesity and type‐2 diabetes

Shazia Anwer Bukhari, Aysha Yasmin, Muhammad Asif Zahoor, Ghulam Mustafa, more

IUBMB Life > 71 > 11 > 1701 - 1710

Secreted frizzled‐related protein 4 (SFRP4) is a member of secreted protein family with sequence similarity to frizzled receptors of wingless‐related integration site (Wnt) signaling pathways. These proteins control diverse functions from embryonic development to adults in many organisms including humans. Initially, SFRPs were recognized as antagonists of Wnt signaling and supposed to interact with...

article

Pore size distribution, their geometry and connectivity in deeply buried Paleogene Es1 sandstone reservoir, Nanpu Sag, East China

Muhammad Kashif, Yingchang Cao, Guanghui Yuan, Muhammad Asif, more

Petroleum Science > 2019 > 16 > 5 > 981-1000

The study of pore characteristics is of great importance in reservoir evaluation, especially in deeply buried sandstone. It controls the storage mechanism and reservoir fluid properties of the permeable horizons. The first member of Eocene Shahejie Formation (Es1) sandstone is classified as feldspathic litharenite and lithic arkose. The present research investigates the pore characteristics and reservoir...

article

Correction to: Sedimentological impact on reservoir quality of Es1 sandstone of Shahejie formation, Nanpu Sag, East China

Muhammad Kashif, Yingchang Cao, Guanghui Yuan, Muhammad Asif, more

Arabian Journal of Geosciences > 2019 > 12 > 18 > 1-1

The original version of this paper was published with error. The correct spelling of author name is “Orkhan Isgandarov” instead of “Orkhan Isgandrove”. Corresponding author failed to provide a correction during proofing stage. Given in this article is the correct name.

article

A dynamically consistent nonstandard finite difference scheme for a predator–prey model

Muhammad Sajjad Shabbir, Qamar Din, Muhammad Safeer, Muhammad Asif Khan, more

Advances in Difference Equations > 2019 > 2019 > 1 > 1-17

The interaction between prey and predator is one of the most fundamental processes in ecology. Discrete-time models are frequently used for describing the dynamics of predator and prey interaction with non-overlapping generations, such that a new generation replaces the old at regular time intervals. Keeping in view the dynamical consistency for continuous models, a nonstandard finite difference scheme...

article

Advancements in electrochemical sensing of hydrogen peroxide, glucose and dopamine by using 2D nanoarchitectures of layered double hydroxides or metal dichalcogenides. A review

Ayesha Aziz, Muhammad Asif, Ghazala Ashraf, Muhammad Azeem, more

Microchimica Acta > 2019 > 186 > 10 > 1-16

This review (with 105 references) describes the progress that has been made in the past few years in the use of 2D nanoarchitectures in electrochemical sensors for the clinically highly significant parameters hydrogen peroxide, glucose and dopamine. Following an introduction into the field, we summarize the improvements in electrochemical sensors that can be accomplished by using such nanomaterials,...

article

A provable and secure mobile user authentication scheme for mobile cloud computing services

Azeem Irshad, Shehzad Ashraf Chaudhry, Muhammad Shafiq, Muhammad Usman, more

International Journal of Communication Systems > 32 > 14 > n/a - n/a

The mobile cloud computing (MCC) has enriched the quality of services that the clients access from remote cloud‐based servers. The growth in the number of wireless users for MCC has further augmented the requirement for a robust and efficient authenticated key agreement mechanism. Formerly, the users would access cloud services from various cloud‐based service providers and authenticate one another...

article

Design of momentum fractional LMS for Hammerstein nonlinear system identification with application to electrically stimulated muscle model

Naveed Ishtiaq Chaudhary, Syed Zubair, Muhammad Saeed Aslam, Muhammad Asif Zahoor Raja, more

The European Physical Journal Plus > 2019 > 134 > 8 > 1-15

. Fractional calculus extends the scope of adaptive algorithms supporting the design of novel fractional methods that outperform standard strategies in various applications arising in applied physics and engineering. In this study, a momentum fractional least-mean-square (M-FLMS) algorithm for nonlinear system identification using a first and fractional-order gradient information is proposed. The...

article

Seismic sources for southern Pakistan and seismic hazard assessment of Karachi

Muhammad Waseem, Muhammad Asif Khan, Sarfraz Khan

Natural Hazards > 2019 > 99 > 1 > 511-536

Karachi is Pakistan’s largest city with population exceeding 18 million and is amongst the top five most congested cities in the world. Karachi has experienced no earthquake related damage in the recorded history of past ~ 175 years. Yet, Karachi is located in a seismically active tectonic setting often compared to Los Angeles with active plate boundary faults and triple junctions within a radius...

article

Sedimentological impact on reservoir quality of Es1 sandstone of Shahejie formation, Nanpu Sag, East China

Muhammad Kashif, Yingchang Cao, Guanghui Yuan, Muhammad Asif, more

Arabian Journal of Geosciences > 2019 > 12 > 17 > 1-21

Comprehensive sedimentological studies regarding different facies types and the factors persuading their development were carried out at Eocene (Es1) member of Shahejie formation of Nanpu Sag. To evaluate the sedimentary facies, lithofacies, and reservoir quality, wireline log analysis, a petrographic thin-section study, SEM, grain size analysis, XRD, and CL analysis were used. The Es1 consists of...

article

Binary‐Metal Selenides: General Approach to Produce Nanostructured Binary Transition Metal Selenides as High‐Performance Sodium Ion Battery Anodes (Small 33/2019)

Zeeshan Ali, Muhammad Asif, Teng Zhang, Xiaoxiao Huang, more

Small > 15 > 33 > n/a - n/a

In article number 1901995, Yanglong Hou and co‐workers demonstrate a simplistic, scalable and general synthesis strategy employing various combinations of binary transition metal selenides (B‐TMSs) with high surface area and hierarchical nanosheet structures as promising anodes for sodium ion batteries (SIBs). Representative B‐TMSs anodes present adequately high energy capacities, excellent rate capabilities...

article

General Approach to Produce Nanostructured Binary Transition Metal Selenides as High‐Performance Sodium Ion Battery Anodes

Zeeshan Ali, Muhammad Asif, Teng Zhang, Xiaoxiao Huang, more

Small > 15 > 33 > n/a - n/a

Multiple transition metals containing chalcogenides have recently drawn boosted attraction as anodes for sodium ion batteries (SIBs). Their greatly enhanced electrochemical performances can be attributed to the superior intrinsic conductivities and richer redox reactions, comparative to mono metal chalcogenides. To employ various binary metals comprising selenides (B‐TMSs) for SIBs, discovery of a...

article

Investigation of the strain‐rate‐dependent mechanical behavior of a photopolymer matrix composite with fumed nano‐silica filler

Muhammad Asif, Maziar Ramezani, Kamran Ahmed Khan, Muhammad Ali Khan, more

Polymer Engineering & Science > 59 > 8 > 1695 - 1700

With the evolution of additive manufacturing, there is an increasing demand to produce high strength and stiffness polymers. Photopolymers are very commonly used in stereolithography and fused deposition modeling processes, but their application is limited due to their low strength and stiffness values. Nano‐sized fibers or particles are generally embedded in the polymer matrix to enhance their properties...

article

Supra‐optimal growth temperature exacerbates adverse effects of low Zn supply in wheat

Abdul Rehman, Muhammad Farooq, Muhammad Asif, Levent Ozturk

Journal of Plant Nutrition and Soil Science > 182 > 4 > 656 - 666

Rising temperatures are a major threat to global wheat production, particularly when accompanied by other abiotic stressors such as mineral nutrient deficiencies. This study aimed to quantify the effects of supra‐optimal temperature on growth, photosynthetic performance, and antioxidative responses in bread wheat cultivars grown under varied zinc (Zn) supply. Two bread wheat cultivars (Triticum aestivum...

article

A novel application of kernel adaptive filtering algorithms for attenuation of noise interferences

Muhammad Asif Zahoor Raja, Naveed Ishtiaq Chaudhary, Zaheer Ahmed, Ata Ur Rehman, more

Neural Computing and Applications > 2019 > 31 > 12 > 9221-9240

In this study, adaptive filtering paradigm-based kernel least mean square (KLMS) algorithm is developed for feed-forwarded active noise control (ANC) systems by exploiting the strength of activation functions of neural network (NN) as kernels. The transfer functions NN based on logistic, tan-sigmoid and inverse-tan kernels are introduced as a variant of KLMS, normalized KLMS and affine projection...

article

The role of hydrogen bonding in π···π stacking interactions in Ni(II) complex derived from triethanolamine: synthesis, crystal structure, antimicrobial, and DFT studies

Muddasra Rubab, Muhammad Nadeem Akhtar, Wiktor Zierkiewicz, Mariusz Michalczyk, more

Research on Chemical Intermediates > 2019 > 45 > 11 > 5649-5664

A complex, Ni(C₆H₁₅NO₃)₂]·2C₇H₅O₂ (1) has been synthesized from the reaction of nickel salt with triethanolamine (TEA) and benzoate in MeOH and characterized by FTIR, elemental analysis and single crystal X-ray diffraction. The complex exhibits moderate cytotoxicity against bovine erythrocytes (15%). Furthermore, high bacterial biofilm inhibition (90%) was recorded against Escherichia coli and moderate...

article

Synthesis of magnetite-based nanocomposites for effective removal of brilliant green dye from wastewater

Muhammad Imran, Azhar Ul Islam, Muhammad Adnan Tariq, Muhammad Hussnain Siddique, more

Environmental Science and Pollution Research > 2019 > 26 > 24 > 24489- 24502

The present study aims at evaluating the batch scale potential of cotton shell powder (CSP), Moringa oleifera leaves (ML), and magnetite-assisted composites of Moringa oleifera leaves (MLMC) and cotton shell powder (CSPMC) for the removal of brilliant green dye (BG) from synthetic wastewater. This is the first attempt to combine biosorbents with nanoparticles (NPs) for the removal of BG. The surface...

article

A new computing paradigm for the optimization of parameters in adaptive beamforming using fractional processing

Muhammad Asif Zahoor Raja, Rizwan Akhtar, Naveed Ishtiaq Chaudhary, Zhu Zhiyu, more

The European Physical Journal Plus > 2019 > 134 > 6 > 1-13

. The use of fractional calculus based novel adaptive algorithms to solve various applied physics and engineering problems is an emerging area of research. In the present study, the parameter estimation problem in adaptive beamforming is explored through the fractional least mean square (FrLMS) adaptive algorithm. The FrLMS algorithm uses the concept of the fractional order gradient in addition to...

article

Determinants of social entrepreneurial intentions for educational programs

Asma, Xiaobao Peng, Shah Hassan, Sadia Akhtar, more

Journal of Public Affairs > 19 > 2 > n/a - n/a

The aim of this research is to find out the determinants of social entrepreneurial intentions for educational programs. For this purpose, some of the factors have been included in this research as the determinants of social entrepreneurial intention. Prior experience has been added as the independent variable although empathy, moral obligation, self‐efficacy, and the perceived social support have...

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INFONA - science communication portal

Search results for: Muhammad Asif

Differential evolution based computation intelligence solver for elliptic partial differential equations

Supplemental potassium mediates antioxidant metabolism, physiological processes, and osmoregulation to confer salt stress tolerance in cabbage (Brassica oleracea L.)

Secreted frizzled‐related protein 4 and its implication in obesity and type‐2 diabetes

Pore size distribution, their geometry and connectivity in deeply buried Paleogene Es1 sandstone reservoir, Nanpu Sag, East China

Correction to: Sedimentological impact on reservoir quality of Es1 sandstone of Shahejie formation, Nanpu Sag, East China

A dynamically consistent nonstandard finite difference scheme for a predator–prey model

Advancements in electrochemical sensing of hydrogen peroxide, glucose and dopamine by using 2D nanoarchitectures of layered double hydroxides or metal dichalcogenides. A review

A provable and secure mobile user authentication scheme for mobile cloud computing services

Design of momentum fractional LMS for Hammerstein nonlinear system identification with application to electrically stimulated muscle model

Seismic sources for southern Pakistan and seismic hazard assessment of Karachi

Sedimentological impact on reservoir quality of Es1 sandstone of Shahejie formation, Nanpu Sag, East China

Binary‐Metal Selenides: General Approach to Produce Nanostructured Binary Transition Metal Selenides as High‐Performance Sodium Ion Battery Anodes (Small 33/2019)

General Approach to Produce Nanostructured Binary Transition Metal Selenides as High‐Performance Sodium Ion Battery Anodes

Investigation of the strain‐rate‐dependent mechanical behavior of a photopolymer matrix composite with fumed nano‐silica filler

Supra‐optimal growth temperature exacerbates adverse effects of low Zn supply in wheat

A novel application of kernel adaptive filtering algorithms for attenuation of noise interferences

The role of hydrogen bonding in π···π stacking interactions in Ni(II) complex derived from triethanolamine: synthesis, crystal structure, antimicrobial, and DFT studies

Synthesis of magnetite-based nanocomposites for effective removal of brilliant green dye from wastewater

A new computing paradigm for the optimization of parameters in adaptive beamforming using fractional processing

Determinants of social entrepreneurial intentions for educational programs

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